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sept. 1s, 1923. 1,463,103

W. DYRSSEN ELECTRODE PROTECTOR Filed Nov. 15 1921 2 Sheets-Sheet 1 MMMlttofznrm Sept. 18 1923.

W. DYRSSEN ELEcTRoDE PROTECTOR Filed NOV. 15 19,21 2 Sheets-Sheet 2 rgnomo@ Wd/demaryrssen @Ho/m13 a Patented Sept. 18, 1923.

WALDEMAR DYRSSEN, F NEW YORK, N. Y.

i ELECTRODE; rnofrncroa.

Aplination ined mumbaidansen serial No. 515,357.

TovaZZ whom it may concern: i

Be it knownf-that :IjWanomAnDnssnm a citizen ofthe United States,residjngfin the eity,: county, and Statezof `New York, have inventedcertain new and useful Improvements in Electro'de Protectors,` of whichthe following is aj specification. "This invention relatesto means.V forVpreventing sectional electrodes from burning away at the joint duetothe oxidizing action of the air and the excessive heating in this zoneand the increased resistance at the joints It is customary inelectricfunacepractice to feed the electrode down throughthe-roof,

and as' it burns away'fin melting theA charge i to add new sectns'thetop of 'the elec- Htro'de to replace the portions burned off inside thefurnace.

, I have observed that thecurrent produces an excess amount of heat` inthe zone of the joint and that the electrode gradually burns fawayinthislocation'and becomes of coni siderably less diameter than theotherp0rtions thereof.` `'Thisis due partly to the increased resistance a'tthejoint and partly to the oxidizing effect of the atmosphere at .thispoint. A j

.I have also observed that afterthe elecf 3 trode enters the furnace itis not so rapidly burned away at the joint because the atmosjA phere inthe furnace is non-oxidizing.4 It :is very desirable to preventthereduction o f diameter of the electrode before it enters the furnace, itbeing clear that if the diameter thereof is materially reduced, anenlarged avenue of escape is established for gases of -the furnace whichresults inthe loss of heat and otherwise interferesmaterially withthe 0operation ofthe furnace.

One object of my invention is to prevent the burning away oftherelectrode at the joint.l Another object .is to:produce means foryprotecting the electrode from the de-V 5 structive action of, theatmosphere. in the zone of the joint. Another object is to provide asleeve adapted to readily be applied to the electrode at the 'time a newsection is joined thereto. A further object is to 00nstruct, ,aprotecting sleeve ofa plurality of sections which can be readilylengthened or shortened in accordance withY the position of the joint ofthe electrode with respect to the roof of the furnace.

Other objects will be apparent from the following description when readin connectionl with the accompanying drawings in which" 'Fig". l is adiagrammatic view showing the :position of the electrode in elevendifferent stages vof operation;

2 is an enlarged View in front elevai Y i tion showing part ofthe roofof the furnace and my improved protecting sleeve mounted thereon; f

Fig. 3 is a horizontal section on the line 3 3 of Fig. 2;

` ig. 4 is a view of a modified form of the devi'cef 'j Fig.l 5l isahorizontal section thereof,

I In the drawings the electrode comprises an upper section-e and a lowersection e', the'sections bein joined to eachother by a screwthreaded pug P.- The roof R of the furnace is provided with a suitable'opening O'through which the electrode passesand the usual cooling 'ring C inwhich a circula` tion of water is maintained as is well understood1nth,1sart. Fitting the upper face of the cooling ring 'is an elongatedsleeve S comprlsing two semi-circular sections s which aredetachablysecured to cach other bymeans of bolts B provided with thumb nuts N, thebolts B passing through suitable flanges. f formed en the sleeve. Thesleeve is also provided with ya plurality of stifening ribs s which alsoassist in radiating the heat from the sleeve to the surroundinatmosphere.r Resting on top of the sleeve is an upper sleeve S formed ofsemi-circular sections and secured together by means of bolts B and nutsN similar to the lower sleeve The lower sleeve is provided with a baseflange s2 which rests on top of the cooling ring and a peripheral flanges which engages the side walls of said cooling ring. The internaldiameter of the sleeves *S and S is slightly greater than the outsidediameter of the electrode E so as to permit the latter to be freelymoved up and down relatively thereto. Instead of having the innersurface ofthe sleeves S and S immediately adjacent to the surface of theelectrode, I may space this inner wall a greater distance away, as shownin Fig. Ll, so as to provide a chamber 8*, in the rings. S2 and S. Inthis form of 'device I form the sleeves with upper and lower annularflanges sshaving apertures s therein which just clear the outer surfaceof the electrode E.

The utility of the device will be apparent the;4 osition o v ..tion ethereto, as shown melting vdonn the Leid by iieans o a suila le holderGr clamped ln the usual manner .to anupper portion therol It will beapparent'frorn position 1, Fig'. 1, that operation in the furnace, theelectrode' rnust necessarily be lengthened n'rlf this isdone bfinserting theY plug l in the-'loiret' section o in position 2. 'Afterlthis isdone my 1in provcil; 's leei'f-es' 'are placed on theoolingringso as tfol iontbwee the two. etien's oxidizing effect of free4atrlnospherre err,

neeessnryto add a' ne v section tothe' eleci` trodeVas indicated in'"position 2.'-

Thefdeiice is ofrsiin'ple construction and,

comparatiijely' inexpensive to inanu'fcture 4and can Vbe applied toiexisting furnaces' without-making alterations thereon. It ef- 'eneconomy the operation of said fects furnaces Yby ititting A( iowin theamount of lused.

of the electrode is in order toproc'eed'nith the the' electrode vandsecuring,r an uppersec44 protect che fof. .the elec-' When this;Aline'oi` division is Shown; the.

beegiusei .the gases heat wasted and by preventing destruction ofoverheadstgctures'hylfghesc "eef hot gasesaround theibnr'eli' a'wy`pgfiiurtgis of unprotected electrode joints as heretofore While I haverlesoribed with great partioularitjf detail the embodiments of theinvention herein shown, it is not to be construed' tliait il'flirhitedthereto, as various n'iodications anrlsulgftitutign of equyzrlents. myler/mede WIE 1; In 'elect-rio' The Combination with the moi. efefelectric fiirnac'ariii asle'e confrisihglfff plurality of separablesections e ove roofof of. said electrode The' i:z )fnbiiiation the 4roofthe fnrnaeesurrounding the jorrit electric' furnace lnd"`aisectionalffelectrtle:`90

passing therethrough, of :i protecting'sleeife aboije theroofzs'ii'rroundjng the elct'rodeind arrangedtofcovrthefjint ofsgidjeleetd t so as to prevent. the lehtrode l 'iront l being? lm'rie'da Way and rofllieiil 'diameterg in'th'e" zoneof 'thejoint'.`""' l"trod'es, compri'sirig salientel seetions"for' varying" the lenqth ofthesleevefeaeli 4Q'fj said sections inuding it plurality of mein'- bersdetafrhabl'yf secured to each other 'tog facilitate theierectin andremoval.'Av 1 In Witness gwhereo'f, I have Vhereunto signed my'name. "f

" 7' i WALLDE'MAR DYRSSEN.

